Deep-well pump mechanism



'Feb. 13, 1923.

. S- C- HANSON.

DEEP WELL PUMP MECHANISM.

3 SHEETS-SHEET l.

HLED MAY 9, 192i.

Feb. 13, 1923. 1,445,510. s. C..HANSON.

DEERWELLPUMP MECHANISM.

FILED MAY 9. 192;. a SHEETS-SHEET 2.

Feb. 13, 1923. 1,445,510.

v Y S. C. HANSON.

' DEEP WELL PUMP MECHANISM.

lilLED MAY 9,1921. 3 SHEETS-SHEET 3.

gwuemtoz I a I @Mowm Patented Feb. 13, 1923.

"-HTED srA P- are SIGU'RD C. HANSON, OF CHIPPEWA IFALLS, WISCONSIN.

Application filed May 9, 1,921.

in a Deepell Pump Mechanism; and I do hereby declare the'following to be a full,

clear, andexact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same.

The object of the invention is to provide a deep well pump mechanism wherein a continuous flow of liquid may be secured at a substantially uniform velocity and volume and to this end to'provide a double acting or duplex pump wherein'the upstroke of the pump pistons overlap at their respective ends or terminals to insure an unbroken lifting action upon the column of liquid; and to this end the invention consists in a construction, combination and relation of parts of which a preferred embodiment is shown in the drawings, wherein:

Figure 1 is a side view of a pump mechanism embodying the invention.

Figure 2 is a front view of the same.

Figures 3 and 4- are respectively plan and sectional views of oneof the cross head members.

Figures 5 and 6 are respectively plan and sectional views of the other cross head member.

Figures 7 and 8 are sections respectively on the planes indicated by the lines 7-? and 8-8 of Figures 4 and 6.

Figure 9 is a diagrammatic view showing how the roller pin follows the slot in the cross head plate.

The drive shaft 10 mounted in suitable hearings in a supporting frame 11 and having a drive gear 12 actuable, for example, by motor 13, carries pinions 14- meshing with crank gears 15 designed to actuate reciprocatory cross heads 16 and 17 which are arranged between the crank gears and are mounted to traverse parallel paths for actuation respectively of the telescoping piston rods 18 and 19.

The rods 20 serve as guides for the cross head in the illustrated embodiment of the invention, although it will be understood that an equivalent thereof may be employed in this connection, and the crank pins 21 and 22, carried respectively by the DEEP-WELL PUMP MECHANISM. I

gears, 14 and Serial No. 467,917.

15 and which are preferably provided with anti-friction sleeves or rollers, operate in connection with cams, preferably slots 23 and 24 in plates 25 and 26 which are carried by the cross heads 16 and 17 respectively, as a means of converting the rotary movement of the crank gears into reciproca'tory movement of'the cross heads for correspondingly actuating the pump rods. The cross head 16 carries a depending yoke 27 to which is attached the upper end of the outer or tubular pump rod 18 and is provided with a suitable stuffing box 28 through which the inner pump rod 19 ex tends, and .theicross head 17 carriesian car 29 to which vis attached said inner pump rod,

the ear being adapted to operate in'the space between the arms of the yoke 27 so as to maintain the alignment of the piunp rods. The stuffingbox on the base of the frame serves to prevent escape of liquid around the outer pump rod.

The direction of rotation of the crank gears are indicated by the arrows thereon. The cam slots 23 and 24 in the cross heads which are traversed by the crank pins c011- sist each of a transverse or horizontal arm or member and an oblique upwardly extending arm or member progressing in a direction opposed to the movement of the cooperating crank pin on the downwardly moving side of the path thereof as will be obvious by reference to the diagram Figure 9, showing the crank pin and cam slot in several positions in the progress or cycle of the elements, and by reference thereto it will be obvious that the upward movement of the cross head is caused by the crank pin during the movement of the latter through more than one hundred and eighty degrees of its travel. For example, starting with the position A in Figure 9 which is the beginning of the downward movement of the crank pin, it will pass through the position B and at C will have reached the limit of the movement tending to cause downward movement of the cross head, after which and from C to D and hence to E and F will continue to cause an upward movement of the cross head, the position 0 being less than one hundred and eighty degrees from the position A on the downwardly moving side of the path of the crank pin. Moreover by reason of the inclination and arrangement of the oblique arm of the cam the downward stroke of the cross head and hence of the pump rod is more rapid than the upstroke, occuring' in a shorter interval of time, so that each pump rod passes from its upper most to its lowermost position during the upstroke of the other pump rod and commences its upstroke before the second named pump rod has conipleted its upstroke. Consequently there is an unbroken upward impulse applied to the column of liquid actuated by the pump and a continuous and practically uniform discharge thereby.

Having thus described the invention, what I claim is 1. A mechanism of the class described having pump rod actuating cross heads, continuously and uniformly rotatable crank members, and connections between each crank member and one of the cross heads consisting of a crank pin on the former and a cam guide on the latter, said cam guide having an arm disposed transversely to the path of the cross head and an arm obliquely disposed thereto.

2. A pump operating mechanism comprising a supporting frame, continuously and uniformly rotatable crank members mounted within said frame and at the sides thereof, pairs of guides between said. crank members, cross heads mounted on said guides for vertical movement and connected with respec- 3. A mechanism of the class described having pump rod operating cross heads, continuously and uniformly rotatable crank members, connections between each crank member and one of the cross heads consisting of a crank pin on the former and a cam guide on the latter, said cam guide having an arm disposed transversely to the path of the cross head and an arm obliquely disposed thereto and said cam guide bearing such relation to the crank pins that afull movement in one direction of each cross head occurs during a movement of less than 180 degrees of the cooperating crank mem ber.

In testimony whereof I aflix my signature in presence of two witnesses.

, SIGURD G. HANSON.

lVitnesses:

E. LBA'rEs,

HENRY Lnnms, Jr. 

